| 引用本文： |
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刘刚,庞先勇,李瑞丰.5A型分子筛吸附热的反相气相色谱研究[J].广西科学,2006,13(1):37-39. [点击复制]
- LIU Gang,PANG Xian-yong,LI Rui-feng.The Study about Adsorption Heat on 5A Molecular Sieve with Reverse Gas Chromatogram[J].Guangxi Sciences,2006,13(1):37-39. [点击复制]
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| 摘要: |
| 结合气相色谱分析方法的特征,应用反相气相色谱法,以N2、CO为探针分子,在不同温度下测定了新制备的分子筛5A-1、5A-2、5A-3、5A-4的保留时间,以保留时间的对数对温度倒数进行回归分析。结果得到线性关系良好的曲线,由此曲线计算得到这些分子筛对CO和N2的吸附热范围分别为26.60~30.12kJ,25.0~28.01kJ。本研究的结果表明,反相气相色谱法能测定出结构微小改变时的吸附热差别。 |
| 关键词: 吸附热 分子筛 气相色谱 |
| DOI： |
| 投稿时间：2005-06-30修订日期：2005-09-14 |
| 基金项目: |
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| The Study about Adsorption Heat on 5A Molecular Sieve with Reverse Gas Chromatogram |
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LIU Gang, PANG Xian-yong, LI Rui-feng
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| (College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China) |
| Abstract: |
| Analyzed and summarized the recent measure ways of the adsorption heat on molecular sieves and the analysis means of gas chromatogram, the reverse gas chromatogram ways is used to measure the adsorption heat at 353393K on four kind of molecular sieves.Using N2, CO as the probes, the regression analysis of logtN (tN is net retention time)to 1/T has been carried on and then the curves with well linear relation is got.The adsorption heat on molecular sieves to N2, CO ranges from 26.6030.12 kJ, 25.028.01kJ.Considered the difference of molecular sieves' structures and the experiments results, it is obtained that the ways of reverse gas chromatogram can check out the distinction of adsorption heat when their structures is modified slightly. |
| Key words: adsorption heat molecular sieve gas chromatogram |
